What the polls showed in the WA campaign

* Leaked internal polling from the Liberal party published on March 7 put Labor ahead on a two-party preferred basis by 57-43

* A ReachTEL poll from March 3 put Labor ahead by 52-48 on two-party preferred. Labor had 33.4 per cent of the primary vote compared to the Liberals 32.5 per cent, and 8.5 per cent for One Nation

* Labor was on track to win six crucial Liberal-held seats in Perth, according to a ReachTEL poll from February 27 that surveyed voters seat-by-seat

* The same poll, which was conducted the day after the leaders' debate on February 22, found three out of 10 voters in 15 marginal seats will vote Liberal

* A Galaxy poll commissioned by Seven West Media from March 5 showed Labor had a 54 to 46 per cent lead over the Liberal-National alliance on a two-party preferred basis. Mr Barnett said his party was still in the game because 15-20 per cent of voters were undecided

* The same poll gave One Nation nine per cent of the primary vote, just ahead of the Greens with eight per cent.